@dave r said:
It sounds to me as if you have something balled up. Clicking the center mouse wheel should make the cursor show the Orbit tool and not have any impact on the the Polygon tool.
In fact, it does have import on SU on my pc,it will make "side" turn to "value",
then,i can input value.
I downloaded the Chinese version SU2015 pro from http://www.sketchup.com/download/all
i even tried to change plugin folder, so that all plugins that i installed won't work.
It still won't display live value.
You might wonder will a different language version be different.
I can not tell exactly. But, last time i use SU8 Chinese version, it is easily broken due to unknow reason. I have to turn to English version at last.
For SU2015 make Chinese version,it's pretty stable, that's why i got Pro.